mirror of
https://github.com/rjNemo/underscore
synced 2026-06-06 02:26:42 +00:00
Ruidy
1031038d42
- Add `Chunk` to split slices into groups of size n. - Add `ContainsBy` for predicate-based containment checks. - Add `UniqueBy` to deduplicate slices by key selector. - Add `ParallelMap` for concurrent mapping with context and error handling. - Add `maps.Keys` and `maps.Values` helpers for extracting map keys/values. - Update README and docs for new features. - Refactor `Contains` to use `slices.Contains`.
33 lines
745 B
Go
33 lines
745 B
Go
package underscore_test
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import (
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"context"
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"errors"
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"testing"
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"github.com/stretchr/testify/assert"
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u "github.com/rjNemo/underscore"
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)
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func TestParallelMap_OrderAndResult(t *testing.T) {
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values := []int{1, 2, 3, 4, 5}
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out, err := u.ParallelMap(context.Background(), values, 2, func(_ context.Context, n int) (int, error) {
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return n * n, nil
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})
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assert.NoError(t, err)
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assert.Equal(t, []int{1, 4, 9, 16, 25}, out)
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}
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func TestParallelMap_Error(t *testing.T) {
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values := []int{1, 2, 3, 4, 5}
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wantErr := errors.New("boom")
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out, err := u.ParallelMap(context.Background(), values, 4, func(_ context.Context, n int) (int, error) {
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if n == 3 {
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return 0, wantErr
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}
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return n, nil
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})
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assert.Error(t, err)
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assert.Nil(t, out)
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}
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